Calendar



Patented July 5, 1932 HUGH n. sHLnn, or' MINNEAroLrs, mrnnnsorn jCALENDAR Application ala February 16, 1.931. serial No. 516,133.

This invention relates to an improvement in calendars, and particularlyto acalendar of the type in Which the date indicating data is grouped inbook form, Wherein there is combined With the date indicating datamemorandum receiving spaces, With the book calendar complete initselfand readily separable from the calendar mounting for preservation of thememorandain book form after the calendar data are no longer useful.

The use of a book form element combining all necessary characteristicsof the calendar and at the same time providing space for desiredmemorandum presents a unique and highly advantageous calendar elementfor the calendar and memorandum spaces, Which may be separatelyassembled in book form and attached to any desired type of mounting, andWhile in use as a calendar serve for convenient reception of memorandaand other data, which memorandum or data may be preserved indefinitelyby simply removing the'calendar element still in book form from themounting or backing of the calendar.

Where, as in theV present invention, the calendar is presented in bookform vWith the leaves to be turned successively in order to present thenecessary calendar data to the eye of the observer, and Where suchcalendar book is to be secured to the backing or mounting so that it maybe Vremoved and preserved intact for memorandum purposes, a seriousproblem is presented inbinding the leaves or sheets of the calendar bookto present the necessary and desirable details of the book form and atthe same time present the highly important and absolutely essentialcharacteristic of a fiat opening of the leaves of the book in order thatthe calendar ldata surface may present a substantially unbroken flatarea to the eye of the observer for convenient and ready reading of thecalendar. data.

In this connection, it is quite apparent that the conventional bookbinding methods are entirelyuseless for under such methods, in theopening of the book, the leaves are curved from the binding line and thejunction or margin of the leaves at the binding edge, or in other Wordsthe longitudinal median line of the area presented when the'book isexposes a particular sheet on Which the calopen, is practically, if notactually, hidden. lf a characteristically similar binding were used forthe leaves making up the book calendar, it is quite apparent that if aparticular calendar period, say for example a month or a Week, Wereprinted on tivo adjacent leaves so as to be exposed When the book wasopened at a particular point, there would bey a considerable area ofadjoining leaves which could not be utilized for calendar data or, if 5Uutilized, Would-,effectively rconceal or render diflicult of readyreadingthat portion of the data printed on the leaves adjacent theirbinding edges.

Therefore, the very essential characteristic of a book calendar is thatWhen opened at any point 'the-adjacent leaves presenting the 'thenexposed surface must lie in substantially the same plane. As thischaracteristic must be presentV inthe exposed D area at any opening ofthe leaves, it is apparent that ay particular type binding or leafconnection is necessary to provide for this result and that theconventional methods of book binding Will not permit the desired resultand are not, therefore, available for the purpose of forming a bookcalendar.

There is another important requisite in connection with book calendarswhich sub- `g0 stantially precludes the use of conventional methods ofbook binding in associating the leaves of the calendar, that is, anyexposed area of the book incident to opening the leaves for presentationof calendar 'data must present that data on an unbroken surface in orderto avoid the ditliculty of reading the calendar Where, for example, suchdata `app-ears on the surface of tivo independent or separated leaves..lThis requires that the leaves of the calendar on which the calendardata is printed must be in unbroken form so that such leaves mustnecessarily be made up of an unbroken sheet folded on its transversemedian line to present t-Wo leaves of the book and the calendar dataprinted on the sheet as an entirety, so that vvhen the calendar bookwith its characteristic binding, 1which permits' a flat opening,

endar data is printed, this sheet is presented to the eye in a flat,uniform plane, with the calendar data unbroken or undivided.

This presents the ideal calendar having the characteristics of the bestpossible presentation of the calendar data for readability, thearrangement of the calendar data, together withmemorandum sheets, inbook form for future preservation, and the securing of this book form toa calendar back or mounting in a way to permit substitution of the bookcalendar' as may be required, while preserving the substituted book as amemorandum book in book form.

In making up the calendar book, a plurality'of folded sheets presentingtwo connected leaves are bound in superimposed relation, with thebinding means such as to enable the leaves, when the book is opened atany point, to present the entire surface of the leaf in substantially aflat plane, the use of sheets folded to form two leaves providing forthe printing of the calendar data on an unbrokeny sheet involving twoleaves to avoid interruption of this data when the hook is opened forthe presentation of the calendar data.

The invention is illustrated in the accompanying drawings, wherein :k

Figure l is a view in elevation of the improved calendar.

Figure 2 is an edge view of the same.

Figure 3 is a perspective view of a portion of the calendar book showingmore particularly the preferred form of uniting successive sheets of thebook to permit the leaves when opened to be presented in a substantiallyflat plane.

Figure 4 is a transverse sectional view showing the connection of threesheets folded to present six leaves, the type of connection beingsimilar to that illustrated in Figure 3.

Figure 5 is a plan of one of the sheets making up two leaves of the bookcalendar, the sheets being formed to provide for the binding connectiontherewith of an adjacent -sheet in the manner illustrated in Figures 3and t.

Figure 6 is a perspective view showing a modified form of bindingsomewhat distorted for the purpose of illustration.

Figure 7 is a plan view illustrating the same form of binding.

Figure 8 is a perspective view showing the means for removablyconnecting the calender book to the backing. Y

Figure 9 is a plan view showing single leaf construction utilizing thetype of binding shown in Figure 6. y

Vith particular reference to Figures l to 5 inclusive, wherein there isshown the preferred type of binding for the sheets in making up thecalendar book, it is understood that the book includes any desirednumber of sheets l which Vare folded on the longitudinal median line at2 to provide two book leaves 3 and 4. 0f course, the number of suchsheets employed, that is, the number of leaves of which the book isultimately composed, will depend upon the type of calendar and upon thenumber of memorandum sheets desired as part of the book. lf eachcalendar data surface covers a period of a month, there will be at leasttwelve sheets required, while if each such surface presents only a week,then there will be at least fifty-two sheets required.

It will be plain from the following description that the calendar dat-aare printed only on one surface of the sheet, that is, on the meetingsurfaces of the two leaves resultant from .the folding of the sheet, theremaining or outer surfaces of these two leaves in any instance servingas memorandum pages so that if only enough sheets are included to carrythe calendar data, each leaf surface carrying calendar data will bepreceded and followed by a memorandum leaf. Of course, if additionalmemorandum pages are desired, thej.Y will be provided by simplyincluding the additional sheets bound in between the calendar datasheets, and obviously the book may conveniently be made up to containany requisite number of memorandum leaves, though it is to be understoodthat in the mini-v mum number of pages necessary to form the calendar,there will necessarily be included the sam-e number of memorandum pages,each of such pages being made up of two leaves. Therefore, in making upthe calendar, provision is always made under all circumstances formemorandum receiving pages.

Viith particular reference to the spe mode of binding the sheetstogether il trated in the preferred form shown in ures l to 5 inclusive,it is to be noted that each sheet, following its folding along thevertical median line to provide the distinctive but duplicate leaves, isformed to present an inherent or integral means for binding that par-110 ticular sheet in the book. To secure this result, we will assume theleaves opened to present the sheet in fiat form, as illustrated inFigure 5. One leaf of such sheet, for example the leaf 3, is divided orcut on a diagonal line at 5 which starts from a point adjacent theI lineof fold 2 in the upper and lower marginal edges of the sheet and extendsinwardly toward and at an inclination to the line of fold, terminatingdirectly the line *20 of fold 2. Thus each sheet, or more particularlyone leaf of that sheet, has divided from it a triangular tab 6, whichtab, however, remains integral with the sheet as a whole at the line offold 2 on which the sheet folded to form the respective leaves.

The desired number of sheets folded to present the 'requisite number ofleaves, with one leaf of each sheet cut to present the triangular tab 6,are' then connected 'together or bound in book form in the followingmanner: The sheets folded in leaf form, with the triangular tabuppermost, are arranged in superimposed relation so that the tab 6 of aparticular sheet or leaf directly underlies the unbroken leaf, as 4, ofthe next sheet, that is, the leaf of each sheet which is without tabformation directly underlies the tab of the next lower sheet. The tabsare covered on their outer surfaces with adhesive so that such tabsbecome united to the leaves ofthe next adjacent sheets. Of course, allmarginal edges of the folded sheets are in alignment,-

and when assembled in this form, the unbroken leaf of each sheet isunited to the nent adjacent sheet through its connection with the tab 6of the nent adjacent sheet.

As thus arranged, the hinged mounting in the binding of each sheet, thatis, two connected leaves, is the tab of the next adjacent sheet, whichtab moves on a foldingcenter which is the line of fold of the nextadjacent sheet. Of course, each sheet, in opening at the leaves of thatsheet, presents an uninterrupted smooth surface folded about its ownline of fold 2. The nent adj acent sheet, when opened, will expose therelatively outer surfaces of the leaves of two adjacent sheets folded onthe line of fold 2 of one of such sheets. Therefore, the lin-e of foldof any particular sheet constitutes `the axis about which the leavesmove in opening the leaves of that sheet, while in opening the bookbetween adjacent leaves of adjacent sheets, the

line of fold of one of such sheets constitutes the axis about which theleaves fold. When the book is opened to spread the leaves of a Vsinglesheet, the line of fold of the leaves is in the plane of that sheet andnecessarily the sheet must open perfectly fiat because the axis aboutwhich the fold moves is in the pla-ne of the leaves being opened.

In the opening of the book to present facing leaves of adjacent sheetsin the same plane, the axis of the opening movement is the line of foldof one of such sheets, and as this separated from the plane of theleaves being opened only by the thickness of one of such leaves, it isapparent that in this particular opening the axial line of movement issubstantially in the same plane as of the leaves being exposed, and itnecessarily follows that this opening also is a fiat openingor apresentation of the full area o f the respective leaves in the same flatplane.

The result of this particular method of binding is important, andparticularly so in connection with calendars for 'which the loin-l ingis particularly designed.'

The importance resides in the fact that no matter at what point the bookmay be opened, the exposed leaves move easilyand readily into a flatplane and present to the eye a smooth, even, flat sheet and in-this par`ticular is to b e distinguished from the normal or conventional types ofbinding because under the latter the sheets, when opened, would bendforcurve from the binding point and the juncture of such leaveswould-present a depression which would not only prevent the properopening of the book for calendar purposes but would absolutely preventtheus-e of a considerable portion of the area of each leaf, either forycalendar purposes or for memorandum purposes.

Again, an essential step in connection with a bookso bound is theimportant results' secured in the printing of the calendar data. Thiscalendar data, no matter what length of time may be covered thereby, isprinted on one surface of a sheet, thatis, on that surface of the sheetwhich delines the inner surface of the leaves when the sheet is folded.Therefore, when this sheet is opened by opening the book, the calendardata is presented in a flat, uniform plane as a result of the bindingand in unbroken, uninterrupted form by reason of the integral line offold of the leaves which together carry the calendar data.

With the calendar data printed on sheets bound as described, the openingof the book to present calendar data presents to the eye an appearance'as if a single fiat sheet were Y printed with this calendar data, eachand every point and detail of which data is as readily discernible andas easily read as any other point. 0f course, the flat opening of thebook presents material advantages in connection with the memorandumsheets, for while when the book is opened to present these sheets, theyhave the appearance of divided sheets along the line of vfold of theYbook,n evertheless these sheets are together in the same fiat plane andevery inch of their surface is exposed in a fiat normal plane andreadily and conveniently adapted for th-e inscribing of data thereon.

It may be mentioned that, if desired and as contemplated, the memorandumsheets, whether merely the opposite sides of the calendar data sheets oradditional'sheets included for the purpose of memorandum, may besuitably printed, ruled orV otherwise marked for the reception ofdataor, if desired, may be printed forv the dissemination of information.For example, the calendar may be printed on a portion of the memorandumsheets, with cooking recipes, weights and measures, legal information,important events occurring in the calendar period of preceding years, orany other information, withv certain of the sheets left blank for thenotation of memorandum important tothe user which, being applied on suchsheets, will have the additional advantage of indicating generally thedate on which the data were inscribed through markings on the memorandumsheet or through reference to the immediately preceding calendar sheet.This eX- planation is offered merely with a view to showing that theinvention is without restriction as to the character of memorandumsheets and whether or not such sheets may be in part or wholly initiallyprinted with details of information or otherwise.

Figures 6 and 7 indicate another type of binding Which has all theadvantages of the type of binding previously described, with theadditional advantage that it is somewhat stronger, permitting thecalendar to withstand a more extended or continued use. In this form,the sheets, exactly similar to the sheets previously described and hereindicated at 7, are folded to present leaves 8 and 9. Independent tabsl0, preferably cloth or strong paper or fabric, are arranged to uniteeach two successive sheets.

Assuming; the sheets in superimposed relation the tabs l0 are secured.to the lower surface of the lowermost sheet and to the upper surface ofthe second sheet, the tabs e2;- tending as integral members around thelines of fold of such first and second sheets. Thus the tabs areconnected to the first and fourth leaves of the first and second sheets.Similar tabs l1 are then applied in exactly the same manner, beingarranged out of line with the tabs 10 and being secured to the lowermostleaf of the second sheet and to the uppermost leaf of the third sheet.Tabs l2 are then applied in alignment with the tabs 10, uniting thelowermost leaf of the third sheet and the uppermost leaf of the fourthsheet. This operation is continued, each alternate pair of tabs being invertical alignment until all or the desired number of sheets are foundin book form.

Here again we have the line of fold of any particular sheet. or pair ofleaves so arranged that when the sheet or pair of leaves are opened, theline of fold is substantially in the fiat plane of the leaves when soopened. Thus when the book so bound is opened to expose the. leaves ofany sheet or the leaves of adjacent sheets, such exposed leavesautomatically move into a flat plane because the line of fold of theparticular leaf is substantially in that plane and thus all theadvantages heretofore set forth for the previous type of binding areinherent in the modified form ofV binding just described. Of course,th-e book for calendar purposes, including; the modified form ofbinding, is printed with calendar data. as in the preferred form andadditional sheets may be introduced for memorandum purposes withoutlimit. y

It may be found desirable in some types of calendars or equivalentstructures to employ sheets of material which will not permit convenientfolding into the double form illustrated in Figures 6 and 7 such, forer: where the sheets are of cardboard or the yl Je.

Under these circumstances, such sheets, as indicated at 13 in Figure 9,are connected by tabs lll after the manner illustrated in Figures 6 and7, that is, the tabs connect the relatively outer faces of adjacentsheets, each sheet other than the first and last havingr ends ofadjacent tabs connected thereto, that is, one tab will be connected tothe relative outer faces of the rst and second sheets, the second tab,in vertical offset plane with respect to the first tab, will beconnected t0 the relatively outer faces of the second and third sheets,and so on throughout the binding, following in this particular themanner of tab arrangement and connection illustrated and described withregard to Figures 6 and 7.

An important characteristic of the present calendar is the provision ofa calendar memorandum book which, following its use as a calendar, maybe preserved for its memorandum purposes indefinitely. This means thatthe calendar books must be secured to a backing, such as l5, for serviceas calendars and memorandum books during' such calendar use and beeventually removable from such backing after the calendar period hasexpired without interfering; in any way with their book form so thatthey may be preserved as books for the preservation of the memorandumdata therein.

To secure this result, each calendar book is secured within theappropriate area on the backing' by strips 16 of fabric or the likehaving a portion of their lengths, as 17, overlying and secured byadhesive to a surface of one of the central leaves of the book, saidsecuring strip being then secured by adhesive throughout an appropriatelength i8 of such strip to the backing. That portion of the strip 16which is secured to the book is firmly cemented between and to one ofthe leaves of the book atabout the central portion of the book relativeto its thickness, such strip then being rmly secured to the back of thebook to one side or the other of the longitudinal center line andextended beyond the book to provide the portion to be secured to thebacking. The securing strips 16 thus are firmly secured to the book andto th-e backing and in part overlie the rear edge of the book.

In this arrangement, if the sheets are turned there is obviously noeffect on the connection until the point is reached where the tape isattached. The tape is always drawing down on that portion of the bookwhich lies directly beneath it, that is, to that portion to which it isdirectly attached. If the sheets are further turned until the pointWhere the tape is attached is pass-ed, the tape no longer pulls on thatparticular side but begins to exert its pull on the other side, that is,if the leaves were turned to the rip'ht, the tape would be pulling downon theleft half sectic ef the book` Yand when. that leaf to which thetape is directly attached is reached and passed, the tape no longerpulls down on the left side and would naturally become loose if GTI theleaves on the right side were thicker or thinner than those on the leftside. As the tape is attached to a leaf in the exact center of the book,the sections of the book on either side of the attached tape are equalso that as the tension of the tape shifts from one side of the book tothe other, there is no possible change in the relation of the parts andthe book is held just as firmly on one side as on the other.

The book thus as an entirety when closed will lie flat on the backing,and yet by a simple separation of these securing strips from thebacking, the book may be removed as an entirety by cutting the tapes,and the calendar book as awhole remain as a complete book for thepreservation of the memorandum and used for an inspection of suchmemorandum indefinitely. If the same mounting is to be used, a newcalendar, with the proper calendar being supplied, the securing tabsprovided with such new calendar book are merely aiiixed to the backingat the proper points and the calendar is again ready for use as acalendar for the ensuing year or other period and as a memorandum forthe same period.

Of course, it is to be understood that notwithstanding the fact that theleaves of the book, when opened, lie fiat, it is nevertheless desirable,in order to avoid displacement of the leaves by casual means, such aswind currents, jarring of the calendar vand the like, to provide somemeans, such as a holding member 19, which will overlie adjacent leaveswhen the calendar is opened to prevent casual displacement of theleaves. This holding member, which may be in any form, either actsmerely by its own weight or under conventional spring pressure, ifdesired, and is turned out of the way when a leaf of the calendar is tobe turned. Similarly, the calendar book may be indexed at 20 orotherwise provided with means for selecting any particular point or leafof the book at will.

The characteristic features of the improved calendar are, first theprovision of the calendar in book form; second, the use of the calendarnot only for calendar purposes but for memorandum purposes; third, thebinding of the associated calendar and memorandum sheets so that whenthe calendar book is o-pened to expose any adjacent leaves such leavesthroughout their full area are maintained inthe same fiat plane, therebyavoiding any bending of the leaves or obstruction of a portion of theirsurface which would be an incidental result of any conventional types ofbinding; fourth, the provision of the book leaves by folding sheetsalong the vertical median line to provide, when such leaves l areopened, an unbroken fiat surface and the utilization of this surface forthe reception of the calendar data and to insurel an unbroken, easilyread and complete surface for the calendar data; and fifth, the securingof the calendar book to a backing in a way to permit full and completeuse of such book on the backing for calendar and memorandum purposes andyet permit the ready separation of the book from the backing after theexpiration of the calendar period or at any other interval, with suchseparation preserving the book in its original form as such in orderthat the calendar and memorandum data of such book may be thereafterpreserved.

rlhe calendar is supported from a hanger bar 21 having pivotal andfrictional association at 22 with the backing and formed with an opening23 for engagement with the usual single hanger employed for supportingthe calendar. The frictional association of the hanger bar with thebacking permits the arrangement of the backing and hanger bar in suchangular relation as will compensate for any shifting in the center ofgravity of the calendar by the opening of the calendar to present at oneside of the longitudinal median line of the sheets a greater number ofleaves than on the other side. rilhis, however,l forms thesubject-matter of a copending application filed February 16, 1931,Serial No. 516,182, and while described herein as an essential part oftheJ calendar proper, is not specifically claimed or otherwise referredto.

l claim :-V

1. A book calendar including sheets folded on the vertical median lineto present similar leaves, one leaf of each sheet being divided to forma tab free of the sheet except at the line of fold, the tab of aparticular sheet being secured to the immediately adjacent leaf of thenext successive sheet.

2. A book calendar made up of sheets folded on a median line to presentsimilar leaves, one of the leaves being divided to separate therefrom atthe upper and lower edges tabs connected with the sheet only at the lineof fold, each of said tabs of a particular sheet being secured to theimmediately adja cent leaf of the next succeeding sheet wherebyV thesheets-are connected toeach other only on the lines of fold of therespective sheets.

1n testimony whereof I affix my si nature.

HUGH E. SHEDD. n. s]

